On Wed, 27 May 2015 10:21:10 -0600 "Ankit Gupta" <ankgupta@xxxxxxxxxxxxxx> wrote: > > The spmi-pmic-arb is also an interrupt controller. It gets a > > single aggregate irq and disseminates it to individual > > pmic-peripheral drivers. Each pmic-peripheral has a unique apid > > number, and can have multiple interrupt capable functions. > > The registered apid range shows the lowest and highest apid > > numbers of pmic-peripheral drivers which request irqs. Pid is > > the base address of that peripheral. For performance measurement, > > tracepoints are added at the beginning of the aggregate irq and > > at the end of the individual pmic-peripheral irqs. > > > > Following is a list showing the new tracepoint events: > > > > spmi_pmic_arb_aggregate_irq_start: aggregate irq number and registered > > apid range. > > > > spmi_pmic_arb_apid_irq_end: apid, irq, func_num, sid and pid. > > > > SPMI Interrupts tracepoints can be enabled like: > > > > echo 1 >/sys/kernel/debug/tracing/events/spmi-pmic-arb/enable > > > > and will dump messages that can be viewed in > > /sys/kernel/debug/tracing/trace that look like: > > ... spmi_pmic_arb_aggregate_irq_start: irq=150 registered apid > > range=(3,189) > > ... spmi_pmic_arb_apid_irq_end: apid=3 irq=1 func_num=0 sid=0 pid=0x8 > > > > Suggested-by: Sagar Dharia <sdharia@xxxxxxxxxxxxxx> > > Signed-off-by: Gilad Avidov <gavidov@xxxxxxxxxxxxxx> > > Signed-off-by: Ankit Gupta <ankgupta@xxxxxxxxxxxxxx> > > --- > > --- > Changes since V1: > - pass ppid from driver to evaluate pid and sid in trace file itself. > - type of apid range change from int to u16 as max range can be 512. > - type of func_num change from int to u8, as max it can be 8. > --- > Tracing part looks fine to me. Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx> -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
